>> if it has an effect that reaches the school climate, we're going to do what we can do work with law enforcement to make sure that's corrected. >> reporter: morgan hill police arrested a 13-year-old for bullying two other students. he verbally and physically taunted them, shooting plastic b.b.s at them. >> the bully was trying to get the other two to use marijuana. when they declined, the relationship was severed. >> reporter: a school resource officer told the bully to stop. >> he knew his behavior was wrong. and went home and contacted the victims again through text messages, facebook and in person. >> reporter: parents are glad britton middle school and the police stopped the bullying before it escalated. >> think of all of the bullies or attempted to have been bullied by somebody. and it's not fun. and one never forgets it. >> reporter: the principal says a strong message of zero tolerance is needed, when teachers and parents want to keep kids safe on campus. >> if kids stop for a minute before they hit send, before they say that extra word, before they repeat that bit of gossip,